kpt-pasture/util/util.go

package util

import (
	"fmt"
	"math"
	"math/rand"
	"regexp"
	"time"

	"gitee.com/xuyiping_admin/pkg/xerr"
)

const (
	LayoutTime    = "2006-01-02 15:04:05"
	Layout        = "2006-01-02"
	LayoutMonth   = "2006-01"
	LetterBytes   = "abcdefghijkmnpqrstuvwxyzABCDEFGHIJKLMNPQRSTUVWXYZ23456789"
	LetterIdxBits = 6                    // 6 bits to represent a letter index
	LetterIdxMask = 1<<LetterIdxBits - 1 // All 1-bits, as many as letterIdxBits
	LetterIdxMax  = 63 / LetterIdxBits   // # of letter indices fitting in 63 bits
	NumberVBytes  = "0123456789"
)

var (
	FrameIdMap = map[int32]int32{
		1: 1, 2: 2, 3: 3, 4: 4, 5: 5, 6: 6, 8: 8, // 00-02
		11: 11, 12: 12, 13: 13, 14: 14, 15: 15, 16: 16, 18: 18, // 02-04
		21: 21, 22: 22, 23: 23, 24: 24, 25: 25, 26: 26, 28: 28, // 04-06
		31: 31, 32: 32, 33: 33, 34: 34, 35: 35, 36: 36, 38: 38, // 06-08
		41: 41, 42: 42, 43: 43, 44: 44, 45: 45, 46: 46, 48: 48, // 08-10
		51: 51, 52: 52, 53: 53, 54: 54, 55: 55, 56: 56, 58: 58, // 10-12
		61: 61, 62: 62, 63: 63, 64: 64, 65: 65, 66: 66, 68: 68, // 12-14
		71: 71, 72: 72, 73: 73, 74: 74, 75: 75, 76: 76, 78: 78, // 14-16
		81: 81, 82: 82, 83: 83, 84: 84, 85: 85, 86: 86, 88: 88, // 16-18
		91: 91, 92: 92, 93: 93, 94: 94, 95: 95, 96: 96, 98: 98, // 18-20
		101: 101, 102: 102, 103: 103, 104: 104, 105: 105, 106: 106, 108: 108, // 20-22
		111: 111, 112: 112, 113: 113, 114: 114, 115: 115, 116: 116, 118: 118, // 22-24
	}
	SpecialHours      = map[int]int{8: 2, 18: 4, 28: 6, 38: 8, 48: 10, 58: 12, 68: 14, 78: 16, 88: 18, 98: 20, 108: 22, 118: 0}
	FrameIdMapReverse = map[int32]int32{
		0:  8,
		1:  8,
		2:  18,
		3:  18,
		4:  28,
		5:  28,
		6:  38,
		7:  38,
		8:  48,
		9:  48,
		10: 58,
		11: 58,
		12: 68,
		13: 68,
		14: 78,
		15: 78,
		16: 88,
		17: 88,
		18: 98,
		19: 98,
		20: 108,
		21: 108,
		22: 118, // 04-06
		23: 118,
	}
	ExpectedFrameIDs = []int32{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}
	FrameIdSlice     = []int32{
		1, 2, 3, 4, 5, 6, 8,
		11, 12, 13, 14, 15, 16, 18,
		21, 22, 23, 24, 25, 26, 28,
		31, 32, 33, 34, 35, 36, 38,
		41, 42, 43, 44, 45, 46, 48,
		51, 52, 53, 54, 55, 56, 58,
		61, 62, 63, 64, 65, 66, 68,
		71, 72, 73, 74, 75, 76, 78,
		81, 82, 83, 84, 85, 86, 88,
		91, 92, 93, 94, 95, 96, 98,
		101, 102, 103, 104, 105, 106, 108,
		111, 112, 113, 114, 115, 116, 118,
	}
)

// GenerateRandomNumberString 生成指定长度的数字串
func GenerateRandomNumberString(n int) string {
	result := make([]byte, n)
	// A rand.Int63() generates 63 random bits, enough for letterIdxMax characters!
	rand.Seed(time.Now().Local().UnixNano())
	for i, cache, remain := n-1, rand.Int63(), LetterIdxMax; i >= 0; {
		if remain == 0 {
			cache, remain = rand.Int63(), LetterIdxMax
		}
		if idx := int(cache & LetterIdxMask); idx < len(LetterBytes) {
			result[i] = LetterBytes[idx]
			i--
		}
		cache >>= LetterIdxBits
		remain--
	}
	return string(result)
}

func GenerateRandomNumber(n int) string {
	result := make([]byte, n)
	// A rand.Int63() generates 63 random bits, enough for letterIdxMax characters!
	rand.Seed(time.Now().Local().UnixNano())
	for i, cache, remain := n-1, rand.Int63(), LetterIdxMax; i >= 0; {
		if remain == 0 {
			cache, remain = rand.Int63(), LetterIdxMax
		}
		if idx := int(cache & LetterIdxMask); idx < len(NumberVBytes) {
			result[i] = NumberVBytes[idx]
			i--
		}
		cache >>= LetterIdxBits
		remain--
	}
	return string(result)
}

// TimeParseLocalUnix 获取当天零点的时间戳
// eg 2023-02-22 => 1676995200
func TimeParseLocalUnix(DayTime string) int64 {
	value := DayTime
	if len(DayTime) <= 11 {
		value = fmt.Sprintf("%s 00:00:00", DayTime)
	}

	theTime, _ := TimeParseLocal(LayoutTime, value)
	return theTime.Unix()
}

// TimeParseLocalEndUnix 获取当天24点的时间戳
// eg 2023-02-22  => 1676995200
func TimeParseLocalEndUnix(DayTime string) int64 {
	value := DayTime
	if len(DayTime) <= 11 {
		value = fmt.Sprintf("%s 23:59:59", DayTime)
	}

	theTime, _ := TimeParseLocal(LayoutTime, value)
	return theTime.Unix()
}

// ConvertParseLocalUnix 字符串转换当天时间戳
// eg 15:04:05 => 1676998245
func ConvertParseLocalUnix(timeParse string) (int64, error) {
	value := fmt.Sprintf("%s %s", time.Now().Local().Format(Layout), timeParse)
	theTime, err := TimeParseLocal(LayoutTime, value)
	if err != nil {
		return 0, err
	}
	return theTime.Unix(), nil
}

// DateTimeParseLocalUnix
// eg 2025-10-13 15:04:05 => 1676998245
func DateTimeParseLocalUnix(DayTime string) int64 {
	theTime, _ := TimeParseLocal(LayoutTime, DayTime)
	return theTime.Unix()
}

// GetMonthRemainDay 获取当前月还剩几天
func GetMonthRemainDay() int {
	now := time.Now().Local()
	lastDayOfMonth := time.Date(now.Year(), now.Month()+1, 0, 23, 59, 59, 999999999, now.Location())
	return int(lastDayOfMonth.Sub(now).Hours()/24) + 1
}

// Ceil 向上取整函数
func Ceil(x float64) float64 {
	// 使用 math.Floor 计算小于或等于 x 的最大整数
	// 然后检查 x 是否为整数，如果不是，则结果加 1
	// 注意：math.Floor 返回的是 float64 类型，所以我们需要进行比较
	// 来确定是否需要加 1
	intPart := math.Floor(x)
	if x-intPart > 0 {
		return intPart + 1
	}
	return intPart
}

// GetLastDayOfMonth
// 接受一个字符串形式的月份（如 "2024-12"），
// 并返回该月份的最后一天的日期（2024-12-31）
func GetLastDayOfMonth(month string) (string, error) {
	t, err := TimeParseLocal(LayoutMonth, month)
	if err != nil {
		return "", err // 如果解析失败，返回错误
	}

	// 获取下个月的第一天
	nextMonth := t.AddDate(0, 1, 0)

	// 返回上个月的最后一天
	lastDay := nextMonth.AddDate(0, 0, -1)
	return lastDay.Format(Layout), nil
}

// GetMonthsInRange
// 接受两个字符串形式的月份（如 "2024-01" 到 "2024-12"），
// 并返回一个包含这两个月份之间所有月份的字符串切片。
func GetMonthsInRange(startMonth, endMonth string) ([]string, error) {
	// 解析起始月份
	startTime, err := TimeParseLocal(LayoutMonth, startMonth)
	if err != nil {
		return nil, err
	}

	// 解析结束月份
	endTime, err := TimeParseLocal(LayoutMonth, endMonth)
	if err != nil {
		return nil, err
	}

	// 初始化结果切片
	var months []string

	// 循环添加每个月份直到达到或超过结束月份
	for curr := startTime; curr.Before(endTime) || curr.Equal(endTime); curr = curr.AddDate(0, 1, 0) {
		months = append(months, curr.Format(LayoutMonth))
	}

	return months, nil
}

// RoundToTwoDecimals 四舍五入并保留两位小数
func RoundToTwoDecimals(num float64) float64 {
	// 使用 math.Round 函数进行四舍五入
	// 先乘以 100，然后四舍五入，最后除以 100
	return math.Round(num*100) / 100
}

// Get21DayPeriods 获取范围时间内21天周期的切片
// 从结束时间开始往前推算，超过开始时间，继续向前推算，直至凑整21天
func Get21DayPeriods(startDay, endDay string) ([][]string, error) {
	startDate, err := TimeParseLocal(Layout, startDay)
	if err != nil {
		return nil, err
	}

	endDate, err := TimeParseLocal(Layout, endDay)
	if err != nil {
		return nil, err
	}

	if startDate.After(endDate) {
		return nil, xerr.Custom("start date is after end date")
	}

	var periods [][]string
	for date := endDate; date.After(startDate); {
		periodEnd := date.AddDate(0, 0, -20)
		periods = append(periods, []string{periodEnd.Format(Layout), date.Format(Layout)})
		date = periodEnd.AddDate(0, 0, -1)
	}
	reverseRows(periods)
	return periods, nil
}

func reverseRows(matrix [][]string) {
	// 获取矩阵的行数
	rows := len(matrix)
	if rows == 0 {
		return // 如果矩阵为空，则直接返回
	}
	// 初始化两个指针，一个指向开始，一个指向末尾
	for i, j := 0, rows-1; i < j; i, j = i+1, j-1 {
		// 交换当前行和对应行
		matrix[i], matrix[j] = matrix[j], matrix[i]
	}
}

// GetRangeDayMiddleDay 获取指定日期范围中间的某一天
func GetRangeDayMiddleDay(dateRange []string, middleDay int32) (string, error) {
	if len(dateRange) < 2 {
		return "", xerr.Custom("date range is not enough")
	}
	if middleDay < 0 {
		return "", xerr.Custom("middle day is not enough")
	}
	startDate, _ := TimeParseLocal(Layout, dateRange[0])
	return startDate.AddDate(0, 0, int(middleDay)-1).Format(Layout), nil
}

// GetRangeDayByDays 获取指定范围日期内按照指定天数来切割
// （2024-10-01 ~ 2024-10-31,5）=> [[2024-10-01,2024-10-05], [2024-10-06,2024-10-10], [2024-10-11,2024-10-15], [2024-10-16,2024-10-20], [2024-10-21,2024-10-25], [2024-10-26,2024-10-30],[2024-10-31,2024-10-31]]
func GetRangeDayByDays(startDay, endDay string, days int32) ([][]string, error) {
	var res [][]string
	if days <= 0 {
		return res, nil
	}
	startDate, err := TimeParseLocal(Layout, startDay)
	if err != nil {
		return nil, err
	}
	endDate, err := TimeParseLocal(Layout, endDay)
	if err != nil {
		return nil, err
	}
	if startDate.After(endDate) {
		return nil, xerr.Custom("start date is after end date")
	}

	if startDate == endDate {
		return [][]string{{startDay, endDay}}, nil
	}

	for date := startDate; date.Before(endDate) || date.Equal(endDate); date = date.AddDate(0, 0, int(days)) {
		if date.AddDate(0, 0, int(days)-1).After(endDate) {
			res = append(res, []string{date.Format(Layout), endDate.Format(Layout)})
			break
		}
		res = append(res, []string{date.Format(Layout), date.AddDate(0, 0, int(days)-1).Format(Layout)})
	}
	return res, nil
}

// 计算样本均值
func mean(data []float64) float64 {
	sum := 0.0
	for _, v := range data {
		sum += v
	}
	return sum / float64(len(data))
}

// 计算样本标准差
func stddev(data []float64, mean float64) float64 {
	sum := 0.0
	for _, v := range data {
		sum += (v - mean) * (v - mean)
	}
	variance := sum / float64(len(data)-1)
	return math.Sqrt(variance)
}

// ConfidenceInterval 计算95%置信区间
func ConfidenceInterval(data []float64) (float64, float64) {
	n := float64(len(data))
	meanVal := mean(data)
	stdDev := stddev(data, meanVal)
	z := 1.96 // 95%置信水平对应的Z值

	marginOfError := z * (stdDev / math.Sqrt(n))
	lowerBound := meanVal - marginOfError
	upperBound := meanVal + marginOfError

	return lowerBound, upperBound
}

// ConfidenceInterval2 计算95%置信区间
func ConfidenceInterval2(p float64, total float64) (min, max float64) {
	if p <= 0 || total <= 0 {
		return 0, 0
	}
	z := 1.96 // 95%置信水平对应的Z值
	marginOf := z * math.Sqrt(p*(1-p)/total) * 100
	return math.Max(0, p*100-math.Ceil(marginOf)), math.Max(1, p*100+math.Ceil(marginOf))
}

// RemoveDuplicates 去除切片中的重复元素
func RemoveDuplicates(slice []string) []string {
	if len(slice) <= 0 {
		return slice
	}
	// 创建一个map来跟踪已经遇到的元素
	seen := make(map[string]struct{})
	// 创建一个新的切片来存储不重复的元素
	var result []string

	// 遍历原始切片
	for _, v := range slice {
		// 如果元素尚未在map中，则将其添加到结果切片和map中
		if _, exists := seen[v]; !exists {
			seen[v] = struct{}{}
			result = append(result, v)
		}
	}
	// 返回不重复的切片
	return result
}

// DaysBetween 计算两个日期（时间戳）之间的天数差
func DaysBetween(startDayUnix int64, endDayUnix int64) int64 {
	time1 := time.Unix(startDayUnix, 0).Local()
	time2 := time.Unix(endDayUnix, 0).Local()
	// Truncate to the start of the day (00:00:00)
	startOfDay1 := time.Date(time1.Year(), time1.Month(), time1.Day(), 0, 0, 0, 0, time1.Location())
	startOfDay2 := time.Date(time2.Year(), time2.Month(), time2.Day(), 0, 0, 0, 0, time2.Location())

	// Calculate the difference in days
	daysDiff := int64(startOfDay2.Sub(startOfDay1).Hours() / 24)
	return daysDiff
}

// GetMonths 计算两个日期之间的月龄（近似值）
func GetMonths(birthDate, now time.Time) int {
	years := now.Year() - birthDate.Year()
	months := int(now.Month()) - int(birthDate.Month())

	// 如果当前月份小于出生月份，年份减1，月份补12
	if months < 0 {
		years--
		months += 12
	}

	// 考虑天数差异（可选：如果当前日期小于出生日期，减少1个月）
	if now.Day() < birthDate.Day() {
		months--
	}

	totalMonths := years*12 + months
	if totalMonths < 0 {
		return 0
	}
	return totalMonths
}

// GetDaysBetween 获取两个日期之间的所有天数
// 2024-10-01 ~ 2024-10-07 => [2024-10-01,2024-10-02,2024-10-03,2024-10-04,2024-10-05,2024-10-06,2024-10-07]
func GetDaysBetween(startDate, endDate string) ([]string, error) {
	// 解析日期
	start, err := TimeParseLocal(Layout, startDate)
	if err != nil {
		return nil, fmt.Errorf("解析开始日期失败: %v", err)
	}
	end, err := TimeParseLocal(Layout, endDate)
	if err != nil {
		return nil, fmt.Errorf("解析结束日期失败: %v", err)
	}

	// 确保开始日期早于或等于结束日期
	if start.After(end) {
		return nil, fmt.Errorf("开始日期不能晚于结束日期")
	}

	// 存储日期的数组
	var days []string

	// 遍历日期
	for current := start; !current.After(end); current = current.AddDate(0, 0, 1) {
		days = append(days, current.Format(Layout))
	}

	return days, nil
}

// GetMonthsBetween 返回两个日期之间的所有月份
// 参数格式为 "YYYY-MM"，例如 "2025-01"
func GetMonthsBetween(start, end string) ([]string, error) {
	// 检查参数合法性
	if err := validateDate(start); err != nil {
		return nil, fmt.Errorf("invalid start date: %v", err)
	}
	if err := validateDate(end); err != nil {
		return nil, fmt.Errorf("invalid end date: %v", err)
	}

	// 解析起始日期和结束日期
	startTime, err := TimeParseLocal(LayoutMonth, start)
	if err != nil {
		return nil, fmt.Errorf("failed to parse start date: %v", err)
	}
	endTime, err := TimeParseLocal(LayoutMonth, end)
	if err != nil {
		return nil, fmt.Errorf("failed to parse end date: %v", err)
	}

	// 检查起始日期是否早于结束日期
	if startTime.After(endTime) {
		return nil, xerr.Custom("start date must be before or equal to end date")
	}

	// 生成月份列表
	var months []string
	for current := startTime; !current.After(endTime); current = current.AddDate(0, 1, 0) {
		months = append(months, current.Format(LayoutMonth))
	}

	return months, nil
}

// validateDate 检查日期字符串的合法性
func validateDate(date string) error {
	if len(date) != 7 || date[4] != '-' {
		return xerr.Custom("date format must be YYYY-MM")
	}
	_, err := TimeParseLocal(LayoutMonth, date)
	if err != nil {
		return xerr.Customf("invalid date: %v", err)
	}
	return nil
}

// MsgFormat 格式化消息字符串 字符串里面有多个冒号，仅删除冒号前后的空格（如果存在）
func MsgFormat(input string) string {
	// 定义正则表达式，用于匹配冒号两边的空格
	re := regexp.MustCompile(`\s*:\s*`)

	// 使用正则表达式替换所有匹配的部分
	return re.ReplaceAllString(input, ":")
}

// IsValidFrameId 检查 FrameId 是否有效
func IsValidFrameId(frameId int32) bool {
	_, ok := FrameIdMap[frameId]
	return ok
}

/*
GetNeckRingActiveTimer
1. frameId值如果是：1到6代表每天的0点到2点，11-16 代表每天的2点到4点， 21-26 代表每天的4点到6点，31-36代表每天的6点到8点，
41-46 代表每天的8点到10点，51-56代表每天的10点到12点，61-66代表每天的12-14点，71-76代表每天的14-16点，81-86代表每天的16-18点，
91-96代表每天的18-20点，101-106代表每天的20-22点，111-116代表每天的22-24点。其中每个数字代表20分钟。
2. 如果frameId大于当前时间点，并往前推20个小时,如果在这个20小时范围内, 就代表frameId是昨天的。
3. 如果farmId的值出现8,18,28,3848,58,68,78,88,98,108,118数字分别代表2个小时，从0-2点开始，以此类推。
帮我根据frameId值，获取对应的时间（YYYY-MM-DD）和小时
*/
func GetNeckRingActiveTimer(frameId int32) (dateTime string, hours int) {
	if frameId < 0 || frameId > 118 {
		return "", 0
	}

	if _, ok := FrameIdMap[frameId]; !ok {
		return "", 0
	}
	nowTime := time.Now().Local()
	currHour := nowTime.Hour()
	// 处理2小时的特殊 farmId
	hours, ok := SpecialHours[int(frameId)]
	day := 0
	if ok {
		if hours == 0 {
			hours = 24
		}
		if hours > currHour {
			day = -1
		}
		hours = 0
		dateTime = nowTime.AddDate(0, 0, day).Format(Layout)
		return
	}

	hours = int(math.Floor(float64(frameId)/10) * 2)
	units := int(frameId % 10)
	hours += units / 3

	if hours > currHour {
		for i := 0; i <= 20; i++ {
			twentyHoursAgo := nowTime.Add(-time.Duration(i) * time.Hour).Hour()
			if twentyHoursAgo == 0 {
				twentyHoursAgo = 24
			}
			if hours == twentyHoursAgo {
				day = -1
				break
			}
		}
	}
	dateTime = nowTime.AddDate(0, 0, day).Format(Layout)
	return
}

// XFrameId 获取XFrameId
func XFrameId(frameid int32) int32 {
	return int32(math.Floor(float64(frameid / 10)))
}

// FrameIds 获取FrameIds
func FrameIds(xFrameId int32) []int32 {
	frameIds := make([]int32, 0)
	for i := 1; i <= 8; i++ {
		if i == 7 {
			continue
		}
		frameIds = append(frameIds, xFrameId*10+int32(i))
	}
	return frameIds
}